| Acronym | Meaning |
| AFBBR | Anaerobic Fluidized Bed Biofilm Reactor |
| RCNDO | Rydberg CNDO |
| WCAT | Water-cooled Atom Trap |
| UCT | University Of Cape Town |
| VU-CC | Valence Universal-coupled Cluster |
| ABWAG | Abwasserabgabengestres (Germany Wastewater Discharge Law Regulates Cost Per Volume) |
| RIXS | Resonant Inelastic X-ray Scattering |
| DCXRD | Double Crystal X-ray Diffraction |
| BCC | Brueckner Coupled Cluster |
| CA | Collision Activation |